Apparatus for elevating and lowering oil-well tubing



- 1,620,190 March 8; 1927- CARLSQN APPARATUS FOR ELEVATING AND LOWERING OIL WELL TUBING Filed Feb. 6 1926 INVENTOR.

14/7/1401 Egan/son;

iTTORNE Y.

I Patented Mar. 8, 1927.

UNITED" STATES rszeno PATENT OFFICE.

ANTHONYE. eARLson, or LOS ANGELES, CALIFORNIA.

APPARATUS FOR ELEVATING Ali'D LOWERING OIL-WELL TUBING.

Application filedlebruary 6, 1926. Serial No. 86,627.

drawing which forms a part of this specifijaws so that the jaws may fit the tubings of 70 cation and in which Fig. 1 is a view partlyin vertical longitudinal section and partly in elevation of my invention shown mounted in an oil well (hr rick and appliedto the well tubing for rais-' ing or lowering the same. 2o

taken on line 2-2.

Corresponding reference characters designate the same parts in all theylews.

I The spider 1 is formed with. a square. base 3 provided with a central opening 4,

which base rests upon the derrick foundation timbers 5. said base being formed with a depending flange 6 a short distance in wardly from the edges thereof, which flange engages the'inn'er side of 'said'timbers and centers the base and its opening 4 over the well. A pair of upstanding members 7 are formed on the base 3 at opposite sides of the openin 4. A pair of jaws 8 are each forme with a pair of spaced outwardly depending ears 9, each of which pairs .of ears straddles the member 7 and is fulcrumed i thereto by a fulcrum pin 19. A pair of levers 11 are formed with forks 12 respectively, each of which forks straddles the pair of ears 9 and is secured thereto by a pin 13 extending through the side members 14:- of the fork and through the ears, the lower innor ends of the side members of one fork being pivotallyeonnected'to the lower inner ends of the side members of the other for by pivot pins 15..

The jaws 8 are of semi-circular formation so that when brought together by the levers ing T when elevated from the well through the opening 4 in the base 3. The jaws 8 are formed with recesses 16 in their gripping faces extending downwardly from t e upper side of the jaws in which recesses are fitted slips 17, there being grooves 18 in the Fig. 2 is a horizontal section of Fig. 1'

11 they will fit entirely around the well tubbottom of said recesses in which fit securing tongues 19 on the bottom of said slips whereby the slips are prevented from falling inwardly from the recesses when the jaws are removed from the tubing. The slips are formed with ripping edges 20 on their gripping faces, w ich edges extend horizontally of the slips. The meeting edges of the jaws 8 are formed with outstanding flanges 21 formed with. grooves 22in their outer sides to receive rings 23 for holding the jaws loosely together, permitting a slight relative opening and closing movement of the slightly varying diameters. Set screws 24: are provided in the flanges 21 of one of the jaws for engaging the flange of the other jaw for adjustably limiting the closing movement of the jaws. A split collar 25 rests on top of the jaws 8 with one section 26 of the collar resting upon one jaw and the other section resting onthe other jaw, there being securing tongues 27 on theunder side of the collar sections fitting in 30 grooves 27' in the top of the jaws, whereby the collar sections are prevented from be-' ing displaced from the jaws. The tubing couplings C are adapted to rest upon the collar 25 to support the tubing at different 35 elevations, the weight of the tubing being placed by said collars C upon the collar 25 and jaws 8, whereby the jaws are swung inwardly on their fulcrums 10 and the edges 20 of the slips 17 caused to be pressedinto the tubing to grip the same firmly, the engagement of the set screws 24 with the flanges 21 of the opposite jaws limiting the inward movement of the jaws and the gripping depth to which the edges 20 are pressed into the tubing. The collar 25 engages the upper edges of the slips 17 and hold them In the recesses 16 so that they cannot be lifted out. To a side member 14 of the fork" 12 swing together and grip the tubing when the tubing is lowered and the weight there-n no of is applied to the jaws by the engagement of a tubing collar 0 with the jaw collar 25.

said jaws respectively.

2. An' apparatus as disclosed including a spider, said spider comprising a base, a pair of jaws pivotally mounted on said base for engaging the well tubing under a coupling thereof, a pair of levers pivotally connected together and to said jaws respectively, and

slips fitted in said jaws forgripping the tubing.

3. An apparatus as dlsclosed including a spider, said spider comprising a base, a pair of jaws pivotally mounted 011 said base for engaging the well tubing under a coupling.

thereof, a pair of levers pivotally connected together and to said jaws respectively, and

" a split collar mounted on top of the jaws with one section of the collar on one jaw and the other section of the collar on the other jaw, on which collar is adapted to rest the tubing coupling.

4. An apparatus as disclosed including a spider, said spider comprising a base, a pair of jaws pivotally mounted on said base for engaging the well tubing under a coupling thereof, a pair of levers pivotally connected together and said jaws respectively, slips fitted in said jaws for gripping the tubing, and a split collar mounted on top of the jaws over said slips with one section of the collar on one jaw and the other section of the collar on the other jaw, on which collar "is adapted to rest the tubing coupling.

5. An apparatus as disclosed including a spider, said spider comprising a base, a pair of jaws pivotally mounted on said base for engaging the well tubing under a coupling thereof, a pair of levers pivotally connected together and to said jaws respectively, slips secured in said jaws for gripping the tubing,

and a split.collar secured on top of the jaws over said slips adapted to hold said slips 6. An apparatus as disclosed including a spider, said spider comprising a base constructed and arranged to rest upon the derrick foundation, a pair of jaws pivotally mounted on said base for engaging the well tubing under a coupling thereof, a pair of levers pivotally connected together and to said jaws respectively, and means for adjus'tably limiting the closing of the jaws.

7. An apparatus as disclosed including a spider, said spider comprising a base,-con- "structed and arranged to rest upon the derrick foundation, a pair of jaws pivotally mounted on said base for engaging the well tubing under a coupling thereof, a pair of levers pivotally connected together and to said jaws respectively, and means for holding the jaws closed.

8, An apparatus as disclosed including a spider, said spider comprising a base constructed and arranged to rest upon the derrick foundation, a pair of" jaws pivotally mounted on said base fpr engaging the well tubing under a coupling thereof, a pairof levers pivotally connected together, and to said jaws respectively, and means for holding said jaws open.

9. An apparatus as disclosed including a spider, said spider comprising a base, a pair of jaws pivotally mounted on said base for engaging the Well tubing under a coupling thereof, and a pair of levers pivotally connected together and to said jaws respectively. In testimony whereof I hereunto aifix my signature.

ANTHONY E. CARLSON. 

